Determine if the date of birth in JavaScript is within the last 110 years

Question

Determine if the date of birth in JavaScript is within the last 110 years

I am dealing with an array of dates that looks like this:

var dateArray = ["1965-12-29", "1902-11-04", "1933-10-21", "1983-10-16"];

My goal is to check and calculate each date of birth element to determine if the age is less than 110 years old based solely on the year. If the age is greater than 110 years (based only on the year), then I want to remove/delete that element from the dateArray.

In essence, I am trying to replicate the following SQL query in JavaScript:

FROM TABLE X
WHERE TO_CHAR(DOB, 'YYYY') > (TO_CHAR(TO_DATE('2014/09/30', 'YYYY/MM/DD'), 'YYYY') - 110)

Thank you very much.

javascript sql arrays validation date

Answer 1

Answer №1

Try utilizing the `.getFullYear()` method found in the Date type:

for(var i=0;i<dateArray.length;i++)
{
   var now = new Date();// you can also specify a specific date like new Date("2014/10/15");
   var birth = new Date(dateArray[i]);
   var age = now.getFullYear() - birth.getFullYear();
   // then compare the age variable to see if it exceeds 110
}

This code should get the job done.

Answer 2

Try utilizing the `.getFullYear()` method found in the Date type:

for(var i=0;i<dateArray.length;i++)
{
   var now = new Date();// you can also specify a specific date like new Date("2014/10/15");
   var birth = new Date(dateArray[i]);
   var age = now.getFullYear() - birth.getFullYear();
   // then compare the age variable to see if it exceeds 110
}

This code should get the job done.

Answer 3

Answer №2

My approach to this problem would be as follows:

var dateArray = ["1965-12-29", "1902-11-04", "1933-10-21", "1983-10-16"];
dateArray = removeOldPeople(dateArray);

function removeOldPeople(dateArray){ 
    //Iterating backwards to remove items from array during iteration
    for(var i = dateArray.length -1 ; i >=0 ; i--){
      var dateString = dateArray[i].split("-");
      var year = dateString[0];
      var month = parseInt(dateString[1])-1;
      var day = dateString[2];
      var age = calculateAge(day, month, year);
        if(age >= 110) {
            dateArray =  dateArray.splice(i);
        }
    }
}

function calculateAge(birthMonth, birthDay, birthYear){
  todayDate = new Date();
  todayYear = todayDate.getFullYear();
  todayMonth = todayDate.getMonth();
  todayDay = todayDate.getDate();
  age = todayYear - birthYear; 

  if (todayMonth < birthMonth - 1){
    age--;
  }

  if (birthMonth - 1 == todayMonth && todayDay < birthDay){
    age--;
  }
  return age;
}

Answer 4

My approach to this problem would be as follows:

var dateArray = ["1965-12-29", "1902-11-04", "1933-10-21", "1983-10-16"];
dateArray = removeOldPeople(dateArray);

function removeOldPeople(dateArray){ 
    //Iterating backwards to remove items from array during iteration
    for(var i = dateArray.length -1 ; i >=0 ; i--){
      var dateString = dateArray[i].split("-");
      var year = dateString[0];
      var month = parseInt(dateString[1])-1;
      var day = dateString[2];
      var age = calculateAge(day, month, year);
        if(age >= 110) {
            dateArray =  dateArray.splice(i);
        }
    }
}

function calculateAge(birthMonth, birthDay, birthYear){
  todayDate = new Date();
  todayYear = todayDate.getFullYear();
  todayMonth = todayDate.getMonth();
  todayDay = todayDate.getDate();
  age = todayYear - birthYear; 

  if (todayMonth < birthMonth - 1){
    age--;
  }

  if (birthMonth - 1 == todayMonth && todayDay < birthDay){
    age--;
  }
  return age;
}

Determine if the date of birth in JavaScript is within the last 110 years

Answer №1

Answer №2

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